#include<stdio.h>
#include<malloc.h>

typedef struct number{
	int len_int;
	int len_point;
	unsigned char* integer;
	unsigned char* point;
} num;

num* make_num(unsigned char* s){
}
num* add(num* m,num* n){
	
}
num* sub(){}

num* div(){}

num* mod(){}

